Niikura-san, who lives nearby, is a quiet, gentle woman. I happened to find that I could see into her house from my own, so I started peeking in out of curiosity. In fact, I accidentally witnessed her masturbating, and since then, it has become a daily routine for me on my days off. Just when I was hoping for a chance, I saw her carrying a heavy-looking package. I called out to her and helped her carry it, and we were able to go inside her house. However, I couldn't do anything, so after being treated to tea, I went home. Realizing I had forgotten my bag, I headed back to her house. I opened the door and called out to her, but there was no response. When I entered the room, I heard a seductive sigh. I quietly headed towards the sound of the voice, and found her masturbating, holding her breath. Unable to resist, I opened the door and embraced her. She was surprised, but my caresses made her body tremble as she reached climax. Once turned on, she greedily desired me, and we had repeated, intense sexual intercourse...